Datasheet LT3797 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Triple Output LED Driver Controller |
| 页数 / 页 | 36 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. … |
| 修订版 | C |
| 文件格式/大小 | PDF / 381 Kb |
| 文件语言 | 英语 |
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. VISP-ISN Full-Scale Threshold
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LT3797
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. VISP-ISN Full-Scale Threshold VISP-ISN Threshold vs VCTRL VISP-ISN Threshold vs VISP vs Temperature
300 254 254 VISP = 48V 253 253 250 252 252 200 251 251 150 250 250 THRESHOLD (mV) THRESHOLD (mV) 249 249 100 V ISP-ISN 248 248 V (ISP-ISN) V(ISP-ISN) THRESHOLD (mV) 50 247 247 0 246 246 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 VCTRL (V) V TEMPERATURE (°C) ISP (V) 3797 G01 3797 G02 3797 G03
VISP-ISN Threshold at ISP/ISN Input Bias Current CTRL = 0.7V vs Temperature vs VISP, VISN VISP-ISN Threshold vs V|ISP-FBH|
203 800 300 VISP = 48V 700 202 ISP 250 600 201 200 500 200 400 150 THRESHOLD (mV) THRESHOLD (mV) 300 199 100 V ISP-ISN 200 ISP, ISN BIAS CURRENT (µA) V (ISP-ISN) 198 50 100 ISN 197 0 0 –50 –25 0 25 50 75 100 125 0 20 40 60 80 100 1.1 1.15 1.2 1.25 1.3 TEMPERATURE (°C) VISP, VISN (V) V|ISP-FBH| (V) 3797 F04 3797 G05 3797 G06
|ISP-FBH| Regulation Voltage vs Temperature, VISP VREF Voltage vs Temperature VREF Voltage vs VIN
1.260 2.04 2.010 2.03 1.255 2.02 2.005 VISP = 4.5V VISP = 48V 2.01 (V) (V) IREF = 0µA 1.250 2.00 (V) 2.000 V REF I V REF V |ISP-FBH| V REF = 450µA ISP = 100V 1.99 1.245 1.98 1.995 1.97 1.240 1.96 1.990 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3797 G07 3797 G08 3797 G09 Rev C 6 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Revision History Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C unless otherwise noted. VISP-ISN Full-Scale Threshold VISP-ISN Threshold vs VCTRL VISP-ISN Threshold vs VISP vs Temperature
300 254 254 VISP = 48V 253 253 250 252 252 200 251 251 150 250 250 THRESHOLD (mV) THRESHOLD (mV) 249 249 100 V ISP-ISN 248 248 V (ISP-ISN) V(ISP-ISN) THRESHOLD (mV) 50 247 247 0 246 246 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 VCTRL (V) V TEMPERATURE (°C) ISP (V) 3797 G01 3797 G02 3797 G03
VISP-ISN Threshold at ISP/ISN Input Bias Current CTRL = 0.7V vs Temperature vs VISP, VISN VISP-ISN Threshold vs V|ISP-FBH|
203 800 300 VISP = 48V 700 202 ISP 250 600 201 200 500 200 400 150 THRESHOLD (mV) THRESHOLD (mV) 300 199 100 V ISP-ISN 200 ISP, ISN BIAS CURRENT (µA) V (ISP-ISN) 198 50 100 ISN 197 0 0 –50 –25 0 25 50 75 100 125 0 20 40 60 80 100 1.1 1.15 1.2 1.25 1.3 TEMPERATURE (°C) VISP, VISN (V) V|ISP-FBH| (V) 3797 F04 3797 G05 3797 G06
|ISP-FBH| Regulation Voltage vs Temperature, VISP VREF Voltage vs Temperature VREF Voltage vs VIN
1.260 2.04 2.010 2.03 1.255 2.02 2.005 VISP = 4.5V VISP = 48V 2.01 (V) (V) IREF = 0µA 1.250 2.00 (V) 2.000 V REF I V REF V |ISP-FBH| V REF = 450µA ISP = 100V 1.99 1.245 1.98 1.995 1.97 1.240 1.96 1.990 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 5 10 15 20 25 30 35 40 TEMPERATURE (°C) TEMPERATURE (°C) VIN (V) 3797 G07 3797 G08 3797 G09 Rev C 6 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Revision History Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts